“…No recurrences or metastasis is observed, except for 14 cases of patients, from whom 10 patients appeared with 1 recurrence, 3 with 2 recurrences, and 1 with 3 recurrences within their follow-up period. [ 2 , 40 , 54 , 65 , 166 , 169 , 170 , 210 , 215 , 220 , 223 , 224 ] These recurrences appeared after the first FNA and surgical excision was mandatory as their definitive treatment. According to a study published by Lorenzo et al [ 224 ] in 2008, malignant transformation has not been noted in 10 years follow-up of a case of a recurrent PC, which needed repeated FNA due to patient's rejection to be operated.…”